Apparatus for mixing oil and air



Jan. 14, 1930. J. KINNEY 3,7

APPARATUS FOR MIXING OIL AND AIR Filed Nov. 18, 1927 5 Sheets-Sheet l 1 as I J G a,

Dwell/Cor: JushzsR.Kinne y,

Jan. 14, 1930. K N 1,743,715

APPARATUS FOR MIXING OIL AND. AIR

Filed Nov. 18, 1927 :s Sheets-Sheet 2 13 .1 a? k\ L \\Y\ \a l E m st! ze zz 5 \\Y/ZZ Jan. 14, 1930. J. R. KINNEY APPARATUS FOR MIXING OIL AND AIR Filed Nov. 18, 1927 3 Sheets-Sheet 3 w VZ V Patentedalan .F14, 1930 g i sg UNITED STATES v PATENT o en! JUSTUB B. KINNEY, OF JAMAICA PLAIN, BOSTON, KASQAGEUSETTS,,ABSIGHOB '10 KINNEY muracrunme COMPANY, OF BOSTON, MASSACHUSETTS I APPARATUS TOR MIXING OILAND AIR Application filed R'gvember 18, 1927. Serial No. 234,178.

This invention relates to means for mixwhich surplus oil may be returned to said ing oil and air and is particularly adapted to tank 10.

provide the proper mixture of these ele- The pipe 14 has a relief valve 15 therein ments preparatory to ejecting the mixture of any well known construction which will into an oil burner. 0pen under a predetermined pressure and 55 The object of the invention is to p10V1d6' permlt the flow of oil into'the tank 10. a simple but effective apparatus including an Within the casing 13 are two chambers oil tank from which oil may be pumped and 16, 17 and extending through these chammixed with air under compression, all surbers are two parallel shafts 18-, 19, the shaft plus oil not required in the mixture being re- 18,be1ng rotated from any suitable source of 0 turned to said tank. power and the shaft 19 being driven thereby This object is attained by the mechanism through the medium of inion 20 secured to illustrated in the accompanying drawings. the driving shaft and t e gear 21 meshing For the purpose of illustrating the inventherewith and secured to shaft 19. I

5 tion, one preferred form thereof is 111 11S- Th Pinion 20 and gear 21 are disposed trated in the drawings, this form. havmg' within the chamber 17 and the gear 21 robeen found to give satisfactory and reliable tates 1n the direction of arrow 01, on Figs. 2 results, although it is to be understood that and 3., v p the various instrumentalities of which the The ends of the teeth of the intermeshing 20 invention consists can be variouslyarranged gears 20, 21 contact with concentric porand organized, and the invention 1s not twns 9f the wall of said chamber 17 so that li it d to the precise arrangement and orany 011 admltted to said chamber 17 through ganization of these instrumentalitles as here-, Inlet 12 on the inlet side of said gears will in shown and described except as required be carried by said teeth to the opposite side 2 by the scope of the appended claims. f Said gears where it may be discharged in Of the drawings: predetermined quantities through a passa e Figure 1 represents a diagram of an ap- 22 In the wall or partition 22 between t e paratus embodying the principles of the chambers 16, 17 present invention. The flow of oil through this passage 22 is 30 Figure 2 represents a vertical section of regulated by a needle valve 23 threaded to so the oil pump and air compressor used 1n said the casln 13 and provided with an actuatapparatus, the cutting plane being on line ing hand e 24 outside of said casing. 2 2 on Fi 5. On the discharge s de of the gears 20, 21 Figure 3 represents a vertical sect1on of 1s an o1l outlet 25 which communicates with 35 the same, the cutting plane being on line th plpe 14 through wh1ch all oil not passing 35 3, 3, on Fig. 5. Into chamber 16 may return to the tank 10 Figure 4 represents a partial horizontal h k fp P c01111111110118 l -tion of section of the same on line 4, 4, o Fig 2, and oil withln the chamber 16 and ke ed to shaft Figure 5' represents a horizontal section of IS eccentnc 26 111I'0l111ded yan annuthe same on line 5, 5, on Fig. 2. l i Pomt of h P P Q y qf 00 Similar characters indicate like parts which 1s always in contact with the cylindrical wall of said chamber. t r g theeveml figures of the draw" The piston 27 is provided with a radial ings. a blade 28 extending throu h the diam t l 45 In the e g 10 1s a tank adapted to slot 29 of an oscillating in 30 mounte d i n contain oil suitable for use in oil burners. c lindrical bearin 1 From the lower end of said tank extends blade 28 fi qag a flf fir t? a delivery pipe 11 leadmgto the inlet. 12 of 3 extending inwardly from its gouter end a pump casing 13, this casing having an oil and having at its inner end a lateral passa e 60 discharge pipe 14lead1ng therefrom through 33, the inner end of which is a short Iiitance from the periphery of the annular piston 27.

' As the eccentric 26 revolves in the direction of arrow 0 on Fig. 3, during a portion of its cycle when the passages 32, 33 are closed. the piston 27 will compress the air admitted to said chamber 16 and as soon as the lateral passage 33 is uncovered this compressed air will be discharged through the passages 33 and into the pipe 34 through which it will be forced into the oil burner.

The air is admitted to the casing 13 through the pipe 35 which communicates with a compartment 36 which in turn communicates with the chamber 16. Likewise the air discharged from the passage 32 will pass through an outlet compartment 34* before entering the discharge pipe 34.

The passage 22 from chamber 17 also communicates with this compartment 34* so that any oil entering said compartment 34* through said passage 22 will be discharged in a path perpendicular to the path of the air delivered from passage 32.

This will cause the air and oil to be thoroughly mixed before the mixture enters the discharge pipe 34 so that the air compressed within said chamber and being discharged through the pipe 34 will be thoroughly impregnated with oil.

For the proper operation of the oil burner the amounts of oil and air must be properly proportioned, and this can be accomplished by adjusting the needle valve 23.

The central portion 13 of the casing 13 has formed therein the chamber 16, the compartment 36 and the cylindrical bearing 31 and has formed thereon bosses into which the ends of pipes 34, 35 are threaded.

Against the front face of this central portion 13 is positioned the partition wall 22 having the passage 22 therein.

Against the outerface of this wall 22 is positioned an end plate 13 and against the rear face of the central portion 13 is positioned an end plate 13.

The plates 13 and 13 are provided with long closed bosses 37 to receive and form bearings for the opposite ends of the shaft 19 and the end plate 13 is provided with a similar boss 38 to receive and form a bearing for one end of the shaft 18.

These end plates 13*, 13 are secured to the central portion 13 of casing 13 by means of bolts 39.

The rear end plate 13 is provided with a stutfing box 40 through which the rear end of the driving shaft 18 extends, the projecting end being connected with any means for imparting rotation thereto.

It will be obvious, therefore, that there can be no leakage of either oil or air when once admitted to the chambers and compartments within said casing and when delivered to the oil burner the mixture of oil and air may be in the exact proportions desired and under constant pressure.

Should under certain conditions any change in the proportions of the mixture of oil and air be desired, such change may be quickly made by adjusting the needle valve 23 without stopping the operation of the oil pump and air compressor.

The tank 10 may be buried as the action of the oil pump will be to create a suction and draw the oil from the tank and this same pump will mix the oil thus obtained with air while the compressor will supply to the burner a required mixture of oil and air always under pressure. I

Manifcstly it'is a great advantage to combine in a single casing both a means for pumping oil and a means for compressing air, driving both mechanisms from the same driving shaft, and furthermore, providing a means whereby the oil and air may be thoroughly mixed in any desired proportions before discharge from the casing.

Another advantage is the provision of means whereby any surplus oil not required in the mixture may be returned to the oil tank without loss.

It is believed that the operation and many advantages of the apparatus will be fully understood without further description.

Having thus described my invention, I claim 1. The combination of a casing having a piston chamber therein; two shafts extending through said casing, one a driving shaft; an eccentric keyed to the other shaft within said piston chamber; an annular piston surrounding said eccentric with a portion of its periphery contacting with the cylindrical wall of said chamber; an oscillating slotted member; a blade on said piston extending through the slot of said member and having an air discharge passage therethrough; an air inlet tosaid piston chamber; a gear chamber in said casing parallel to said pis ton chamber; a gear therein secured to the piston shaft; a pinion in said gear chamber secured to the driving shaft; means for admitting oil to said gear chamber on one side of said intermeshing gears; a passage from said gear chamber on the discharge side of said intermeshing gearsand leading directly to the outlet of said piston chamber; means for controlling the flow of oil through said passage; and means for returning surplus oil to the source of oil supply.

2. The combination of a casing having two parallel chambers therein separated by a partition having a passage therethrough directly connecting said chambers; two parallel shafts revolubly mounted in said casing; intermeshing gears on said shafts in one chamber, said chamber being provided with an oil inlet on the opposite side of said gears from said passage; air compressing means in the other chamber actuated by the rotation of the driven shaft; means forcontrolling the flow of oil through said passage; and means for returning surplus oil to the source of oil supply.

3. The combination of a casing having a piston chamber therein and an outlet compartment communicating therewith; means within said piston chamber for compressing air; an air inlet to said chamber; a gear chamber in said casing; an oil inlet to said gear chamber; a passage from said gear chamber leading directly to said outlet compartment; a needle valve forsaid passage; and gears in said gear chamber adapted to pump oil through said passage into said outlet compartment.

4. The combination of a casing having a piston chamber therein and an outlet compartment communicating therewith; means within said piston chamber for compressing air; an air inlet to said piston chamber; a gear chamber in said casing; an oil inlet to said gear chamber; a passage from said gear chamber to said outlet compartment; a needle valve for said passage; gears in said gear chamber adapted to pump oil through said passage to mix with the air passing through said outlet compartment; a discharge pipe from said gear chamber; and a relief valve in said discharge pipe.

5. Thecombination of a casing having a piston chamber therein and an outlet compartment communicating therewith; means within said chamber for compressing air; an air inlet to said piston chamber; a gear chamber in said piston casing; an oil inlet to said gear chamber; a passage from said gear chamber leading directly to said outlet compartment; a needle valve for said passage; two shafts extending through said casing, one a driving shaft; a piston forming part of the air compressing means and actuated by the other shaft; a gear secured to the piston shaft; and a pinion meshing therewith secured to the driving shaft.

6. The combination of acasing having a piston "chamber therein and an outlet compartment communicating therewith; two shafts extending through said casing, one a drivin shaft; an eccentric keyed to the other s aft within said piston chamber; an annular piston surrounding said eccentric with a portion of its periphery contacting with the cylindrical wall of said chamber; an oscillating slotted member; a blade on said piston extending through the slot of said member and having an air discharge passage therethrough; an air inlet to said piston chamber; a gear chamber in said casing parallel to said piston chamber; a gear therein secured to the piston shaft; a pinion insaid gear chamber secured to the driving shaft; an oil inlet to said gear chamber on one side of said intermeshing gears; a pas sage from said gear chamber on the opposite side of 'said intermeshing gears and leading to the air outlet compartment; and means for controlling the flow of oil through said assage.

7. he combination of a casing having two parallel chambers therein separated by a partition having a passage therethrough directly connecting said chambers; two parallel shafts revolubly mounted in said casing; intermeshin gears on said shafts in one chamber said 0 amber being provided with an oil inlet on the opposite side of said gears from said passage; air compressing means in the other chamber actuated by the rotation of the driven shaft; and means for controlling the flow of oil throu h the passage leading from the gear cham er to said air compressing chamber.

Signed by me at 746 Old South Bldg, Boston, Mass, this 15th day of November,

JUSTUS R. KINNEY. 

